Rubber-shoe press.



J.R.GAMME1ER.

RUBBER SHOE PRESS. APPLICATION me APR.28.19|1.

1 ,27 1,307 Patented July 2, 1918.-

AUNITED STATES PATENTl OFFICE.

JOHN R. GAMMETEB, OF AKRON, OHIO, ASSIGNOR TO THE IB. F. GOODRICHCOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

RUBBER-SHOE PRESS.

Application led April 28, 1917.

T 0 all 'whom it 'may concern Be it known that I, JOHN R. GAMMETR, acitizen of the United States, residing at Akron, in the county of Summitand State of Ohio, have invented certain new and useful Improvements inRubber-Shoe Presses, of which the following is a specification.

This invention relates to the artzof compacting rubber footwear by thedirect application to the sole and upper of a pressure fluid such ascompressed air, an example of apparatushaving that mode, of operationbeing shown in my Patent No. 1,232,787 of July 10 1917 which illustratesthe employment of2 a liquid-backed dia hragm or gasket for sealing themouth o the shoe. The object of the present invention is to simplify themode of applying the principle contained in my aforesaid patent, and tothis end it consists in providing an annular sealing member havingcertain improved characteristics as hereinafter' claimed and illustratedby the description and drawings.

0f the accompanying drawings,

Figure 1 is a vertical section, partly in clevation, representing apress for rubber shoes which embodies my invention.

Fig. 2 is a lan view of the gasket or packin member or the mouth of theshoe.

`ig. 3 is a horizontal section through the press taken above the shoeand gasket.

10 is a pot or vessel having a cover 11 connected by a pivot or swivelat 12 with a bracket 13 which is hinged at lt to the wall of pot 10,said cover having an interlocking connection of the-familiarbreech-block type (not shown) with the rim of said vessel, and having ahandle 15 for rotating it to effect the locking and unlocking action;

16 is a pipe connecting the interior of the pot with the casing of avalve 17 provided with an operating handle 18, Said valvecasing alsohcingconnected with a compressedair supply pipe 19 and having adischarge branch 20, whereby the interior of the pot may be charged withcompressed air and discharged by suitable manipulation of the valvehandle.

21 is the rubber' shoe, mounted on a last 22 which supported in an'inverted position near the bottom of pot l() by the boss of asteady-pin or dowel 23 whose hole 24 in the last assists ii enting theinterior of the shoe. lThe shoe lining is preferably extended beyond theedge of the upper as Specification of Letters Patent.

Patented July 2, 191s.

Serial No. 165,063.

27 is an annular gasket consisting of a tubular casing 28 made of asuitable im` pervious flexible material such as rubber reinforced withfabric, which is or may be nearly inextensible, and a. water or otherliquid liller 29 constituting a mobile core which is ihjected-into thetubular casing through a branch tube 30` the latter being then doubledon itself and tied with a string to retain the contents. The gasket issomewhat elongated to correspond with the contour of the neck of thelast and it lies loosely on the bottom ot' pot 10, so as to shift.slightly for different sizes or shapes of shoes, if necessary. r31 is avent hole leading from the interior of the pot to the atmosphere, saidhole being located inthe floor of thc pot immediately lzelow the lastand serving to permit the escape of air from the interior of the shoeand the space inclosed by the gasket. Y

lin operation, the handle of valve 17 being in its discharge positionand the cover 1l unlocked and thrown back on its hinge, a. rubber` shoewith the parts thereof assembled and stuck together on the last isinserted on the dowel pin 23, into ythe aperture of gasket 27, the coveris closed and locked and the last-clamp Qis pushed down against (ne.heel of the shoe. Valve-handle 1S being then .iirned to shutoff theoutlet 20 and connect the pipes 1G and 1S), compressed air is admittedto the interior of pot 10, ,and since the space below the last is ventedto theI atmosphere and the mouth of the shoe is sealed bythe closeconformity of the mobile-cored gasket to the contour of the last, thepressure of the air will`\force the lasted shoe down into the gasket toperfect this sealing action and ut like salue time will squeeze out anyair between the shoe and the last and thoroughly' compact the layers ofthe shoe against each other and against the last. ln this way a reatdeal of hand-rolling is dispensed wit and the eompacting is betterandmore quickly effected. 0n discharging the pot and removing the shoe,vulcanizing is then performed in the usual way. For any wide range inshoe sizes, different sized gaskets are used.

I claim:

1. A rubber-shoe press for low-top shoes comprising a pot, means forsupportinr a lasted shoe therein, means for admitting compressed airthereto into direct Contact with the shoe, and an instep engagingannular gasket loosely mounted in said pot, for sealing the mouth of theshoe.

2. A rubber-shoe press for low-top shoes comprising a pot, means foradmitting oompessed air thereto into direct contact with the lastedshoe, means for supporting theJ "lasted shoe in an instep-engaginginverted position, and an annular gasket loosel mounted on the floor ofthe pot, into whic i the neck of the last is adapted to be foi-eed bythe com ressed air.

3. A rub er-shoe press for low-top shoes comprising a pot having avent-hole in its bottom, means for supportingn lasted shoe in aninverted position over said hole, an instep-engaging annular gasketloosely mounted on the floor of the pot and surrounding said hole, andmeans for admitting compressed air to the interior of the pot intodirect Contact witli the sole and upper of the shoe.

4. A rubber-shoe press comprising a pot,

means for supporting a lasted shoe therein, means for admittingcompressed air thereto into dil'eet Contact with the lasted shoe, and anannular askot for sealing the mouth ol' the shoe, said gasket comprisinga flexible, tubular envelop and a mobile eoi'e.

5. A rubber-shoe press comprising a pot, means for supporting a lastedshoe in an inverted position therein, means toi' admitting eompx'esstalail' thereto into direct eontaet with the lasted shoe, an annular gasketloosel)l supported on the floor of the pot, for sealing. the mouth ot'the shoe. said gasket comprising an envelop and a liquid eole, and meansfor venting the spat-e inelosed hy the gasket under the last.

tl. A shoe-sealing gasket comprising a tubular envelop and a mobileCore.

7. A shoe-sealing gasket comprising' an annulaiI tubular envelop and aliquid eol'e.

S. A shoesealing gasket comprising an annular tubular envelop having. abranch filling tube` and a liquid core in said envolop.

In testimony whereof l have hereunto set Vmy hand this 26th day ofApril, 1917.

JOHN R. GAM M ETER.

